A swimming pool holds 600,000 liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty it in 200
minutes, and the second pipe alone can empty it in 120 minutes. When both pipes are draining together, how long does it take them to empty the pool?

Answers

Answer 1

Answer:

1 hour

Step-by-step explanation:


Related Questions

Find the value of each variable.

Answers

Answer:

x=17

Step-by-step explanation:

their interior angles so they equal each other

40=2x+6

34=2x

x= 17

if the outcome of event a is not affected by event b, then events a and b are said to be

Answers

Independent and mutually exclusive.

A clothing business finds there is a linear relationship between the number of shirts, n ,it can sell and the price, p , it can charge per shirt. In particular, historical data shows that 1000 shirts can be sold at a price of $66, while 10000 shirts can be sold at a price of $48. Give a linear equation in the form p

Answers

Answer: p = [tex]\frac{-n}{500} +68[/tex]

Step-by-step explanation:

Let n represent the number of shirts and p represent the price, the there is a linear relationship between n and p, then the model equation is given as:

p = mn + b, where

m = slope and b is the intercept

From the question, when n = 1000, p = $66

And, when n = 10,000 , p = $48

The formula for finding slope is given as:

m = [tex]\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]

[tex]y_{1} = 66[/tex]

[tex]y_{2} = 48[/tex]

[tex]x_{1} = 1000[/tex]

[tex]x_{2} = 10000[/tex]

substituting the values,

m = [tex]\frac{48-66}{10000-1000}[/tex]

m = [tex]\frac{-18}{9000}[/tex]

m = [tex]\frac{-2}{1000}[/tex]

m = [tex]\frac{-1}{500}[/tex]

The linear equation thus becomes

p = [tex]\frac{-n}{500}+b[/tex]

To find the value of b, substitute  p = 66 and n =1000 into the equation

That is,

66 = [tex]\frac{-1000}{500}+b[/tex]

66 = -2 + b

68 = b

Therefore b = 68

The linear equation is therefore

p = [tex]\frac{-n}{500} +68[/tex]

solve x/3 = 1.5 show working out

Answers

Answer:

x = 4.5

Step-by-step explanation:

[tex]\frac{x}{3}[/tex] = 1.5 ( multiply both sides by 3 to clear the fraction )

x = 3 × 1.5 = 4.5

x=4.5 because you have to times the 3 on both sides leaving x=3•1.5 equaling to x=4.5

This is 3 of 3 problems I need help with

Answers

Answer:

x=65

Step-by-step explanation:

X =65

180-140= 40 the other inside angle next to the 140
180-40-25= 115 last inside angle of the triangle
180 -115= 65 angle x

helppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

what do u need help for, I can help you

Answer:

well i have to know the unit rate in order to know the answer

Step-by-step explanation:

So, to quote Sonic the Hedgehog from the movie Sonic the Hedgehog:

Which of the following represents the distance between x and y on a number line?
A. (x + y)
B. |y - x|
C. (y – x)
D. |x+y|
E. yx

Answers

C is the correct answer

I need help asap please

Answers

Answer:

A= 90 , b= 12 , c=60,

Step-by-step explanation:

cuz im smart like that

Anyone know this?I need helppp

Answers

Answer:

nope sorry

Step-by-step explanation:

Evaluate 3215.

Enter your answer as a whole number

Answers

Answer:

3215

Step-by-step explanation:

There is no explanation

Go and increase you Intelligence

Victoria is preheating her oven before using it to bake. The initial temperature of the oven is 65° and the temperature will increase at a rate of 15° per minute after being turned on. What is the temperature of the oven 8 minutes after being turned on? What is the temperature of the oven tt minutes after being turned on?

Answers

Answer:

answer is on my head

Step-by-step explanation:

I need points

-5-3x>2(10+2x)+3
help

Answers

Answer:

x < - 4

Step-by-step explanation:

- 5 - 3x > 2(10 + 2x) + 3 ← distribute parenthesis and simplify right side

- 5 - 3x > 20 + 4x + 3

- 5 - 3x > 4x + 23 ( add 3x to both sides )

- 5 > 7x + 23 ( subtract 23 from both sides )

- 28 > 7x ( divide both sides by 7 )

- 4 > x , that is

x < - 4

Can someone plsss help me with the 2 one

Answers

Answer: [tex]\sqrt{73}[/tex] for number 7

Step-by-step explanation:

a²+b²=c²

3²+8²=c²

9+64=c²

[tex]\sqrt{73}=\sqrt{c^2}\\\sqrt{73}=c[/tex]

cherie left at 7:10 to drive to her aunts house her aunts lives 339 miles away she arrived at 12:55 how long did it take cherie to drive to her aunt house

Answers

Answer:

17hrs 45mins

Step-by-step explanation:

Timespan is 17 hour(s) and 45 minute(s).

What is an equation of the line that passes through the point (8,0) and is parallel to the line x-4y=20?

Answers

Answer:

y= 1/4 (x -8)

Step-by-step explanation:

x -4y= 20

-4y= -x + 20

y= 1/4 × -5

y - y1 = m (x - x1)

y - 0 = 1/4 (x -8)

y= 1/4 (x -8)

Help me please due tommorow

Answers

Answer:

b bc its the right one :D i think

Rosalyn is a teacher who plays a review game with her class. The name involves writing each student's name on
an identical slip of paper and selecting students at random Here's the makeup of her class
10th 11th 19
Number of students
18
Suppose that Rosalyn wants 2 different students, so she ples 2 names without replacing names between picks
What is the probability that both students selected are 11th graders!
Round your answer to two decimal places.

Answers

Using the principle of probability, probability of selecting 2 students without replacement and being 11th graders is 0.230

The distribution of students :

11th graders = 1810th graders = 19Total number of students = 18 + 19 = 37

Recall :

Probability = required outcome / Total possible outcomes

Since, selection is done without replacement :

P(both are 11th graders) = (18/37) + (17/36) = 0.230

Therefore, the probability that the two selected students are 11th graders is 0.230

Learn more : https://brainly.com/question/25215975

please friends help to solve this issue​

Answers

no answer bcz w bff fgfthsrgffd

Answer:

∅=45°

Step-by-step explanation:

[tex]2sin[/tex]∅=[tex]\sqrt{2}[/tex]

[tex]sin[/tex]∅=[tex]\frac{\sqrt{2} }{2}[/tex]

∅=[tex]sin^{-1} (\frac{\sqrt{2} }{2} )[/tex]

∅=45°

I hope this help you

Pls help I have 10 minutes

Answers

Answer:

-5p (11p-8p+7p-15p = 4 terms)

100 - 100m 5 terms

-4.1n^3 + 3.6 a^2 + 1.4a. 4 terms

26 x^2y - 22 x y^2. 2 terms (can’t be combine)

Step-by-step explanation:

Esteban is 11 years older than Mya. Last year Esteban was twice as old as Mya. How old is Mya now?

Answers

Answer:

Mya is 12

Step-by-step explanation:

EEstaban is 11 years older so Estaban was 22 and Mya was 11

so now Maya is 12

Hope this helps! :)

Answer: 12 years old

Step-by-step explanation:

Let x be Esteban's age, and let y be Mya's age.

x = y + 11

x-1 = 2(y-1)

Substitute

y + 11 - 1 = 2 (y - 1)

Solve

y + 10 = 2y - 2

12 = y

Hope it helps :)

I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best :D

Answers

Answer:

52.5

Step-by-step explanation:

Just subtract 65-12 which is 53. Take away 0.5 to get 53.5

Answer:

The sunflower was 52.9 inches when the gardner last measured.

Step-by-step explanation:

a) x + 12.1 = 65 in.

b) To solve this problem, use inverse operations to find x variable. Since this problem has addition, we will have to use subtraction. 65 - 12.1 = 52.9. So, 52.9 would be your answer.

-kiniwih426

How many times larger is 4 × 105 than 2 × 102?
A.
200
B.
2,000
C.
20,000
D.
20

Answers

Answer:

None answer applicable, answer would be 2.05882353 incorrect question or no answer given with A.B.C.D

Step-by-step explanation:

4 * 105 = 420

2 * 102 = 204

420 / 204 = 2.05882353

Answer:

B. 2000

Step-by-step explanation:

Divide the given numbers:

4× 10⁵ ÷ 2 × 10² = 4/2 × 10⁵⁻² = 2 × 10³ = 2000

(X^2 -6x -20)/(x+2)

Use long division

Answers

Answer:

The answer is x-8-4/x+2.

Step-by-step explanation:

I'm certain this is correct since I factored and have done everything required.

[tex]\sqrt{4x-5}-\sqrt{16-5x}[/tex]

Answers

Answer:

[5/4,16/5]

Step-by-step explanation:

least common denominator between the fractions 1/3 and 2/8

Answers

Answer:

LCD 1

Step-by-step explanation:

Answer:

I believe the LCD is 24.

Step-by-step explanation:

if 8 blouses cost $1,200 Find the cost of 3 blouses​

Answers

Answer:

3 Blouses cost $450

Step-by-step explanation:

1,200 ÷ 8 = 150

150 x 3 = 450

Answer: $450

Step-by-step explanation:

First divide 1,200 by 8 (150) Then times that by 3 to get the answer

Jeff walks 3 1/2 miles in 3/4 hour. In 1 1/4 hour Sarah walks 6 3/4 miles. Who walks faster

Answers

I think it should be jeff

The graph of y=mx is a straight line :
(a) Parallel to the x-axis.
b) Passing through the origin
(c) parallel to the y-axis.
(d) coincides with the x-axis.​

Answers

Given :-

The graph of y=mx is a straight line :(a) Parallel to the x-axis.b) Passing through the origin(c) parallel to the y-axis.(d) coincides with the x-axis.

To find :-

The correct option .

Solution :-

General Equation of slope intercept form ,

y = mx + c .

Here c = 0 , so its y intercept will be (0,0) . Hence it will pass through origin .

will pass through origin.

Given ∆TOM with vertices T(-1, 8), O(-3, 3), and M(-6, 7). (a) Graph ∆TOM on the axes provided below. (Draw it in your notes) (b) On the same set of axes, graph ∆T'O'M', the image of ∆TOM reflected over the line y = -x. (c) On the same set of axes, graph ∆T"O"M", the image of ∆T'O'M' reflected over the x-axis.

Answers

Answer:

i dont know if i did this right buut

Step-by-step explanation:

Increase a price of £30 by 10%

Answers

Answer:

£33

Step-by-step explanation:

A 10% increase is the same as multiplying a value by 1.1.

30 * 1.1 = 33

Answer:

10 x 30 /100 = 3 so 30 +3 = 33

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